Big Brother housemate Nush broke a tooth as she larked around in the early hours.
The blonde, from Malvern, Worcestershire, crashed into a stool while blindfolded as she and the others played a game in which they made themselves dizzy.
She had to seek expert advice in the diary room after her dental disaster.
Nush and the others had been livening up the night by covering their eyes and spinning around a broom handle until they became disorientated, then laughing at their erratic movements.
But Nush’s turn ended with a gasp of pain as she went head first into the metal base of the seat with a clunk.
“I’ve chipped my tooth,” she announced, as the rest of the group flocked round to survey the damage.
Fighting them off, she said: “I don’t want to feel like a freak show.”
Examining the tooth, she told the others: “I can feel the nerve, It’s the tooth of doom.
“Trust me to crawl headlong into a chair.”
Housemates face their first eviction tonight with “boring” Jon favourite to get the boot.
Today he was holding court in the garden to relate the storyline of George Orwell’s satirical novel Animal Farm.
Past conversational topics for the computer geek have included sandwich fillings, physics and science fiction, and he has fast become known for his dull discussions.
Bookmaker William Hill puts Jon at 1-6 to be the first contestant voted off the show, with task bungler Federico his nearest rival, way behind at 10-1.
Also up for eviction are Scott and bubble bath-loving Anouska who stripped off for a soak.